Author Topic: SpaceX F9 : Starlink group 5-2 : CCSFS SLC-40 : 26 January 2023 (09:32 UTC)  (Read 31975 times)

Online Steven Pietrobon

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T+2 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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First stage separation.

Second stage ignition.

Fairing separation.

T+3 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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T+4 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Elthiryel

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According to the webcast, it's the heaviest F9 payload ever at over 17,400 kg. If we divide it by 56, a single satellite mass seems to be around 310.7 kg.

For one of the 54 satellite launches they said that the mass is around 16,700 kg (I think they said "around", not "over", but I would have to check). It gives us a mass of a single satellite around 309.3 kg, so it's pretty consistent.
« Last Edit: 01/26/2023 08:38 am by Elthiryel »
GO for launch, GO for age of reflight

Online Steven Pietrobon

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T+5 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online FutureSpaceTourist

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Online Steven Pietrobon

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T+6 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Entry burn.

T+7 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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T+8 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Touchdown, cutoff and good orbit.
« Last Edit: 01/26/2023 08:43 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online FutureSpaceTourist

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https://twitter.com/NASASpaceflight/status/1618544749908221952

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SpaceX Falcon 9 B1067 completes its ninth mission, landing on drone ship Just Read the Instructions.

youtube.com/watch?v=VQC2xtsP97s
« Last Edit: 01/26/2023 08:44 am by FutureSpaceTourist »

Online FutureSpaceTourist

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twitter.com/nextspaceflight/status/1618537475735183361

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Autotrack attempt watchable fullscreen on Space Coast Live. A lot of cloud cover. We'll see what we get.

https://twitter.com/nextspaceflight/status/1618544175821258753

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Minor issue picking it up as it came behind the trees, but will be a trivial fix. Then rock solid until Falcon went into the clouds.

Edit to add:

twitter.com/nextspaceflight/status/1618547269426642944

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Specifically, while waiting for the rocket to rise above the trees, the object detection class used to track the rocket after it becomes a tiny dot in the sky had a false positive on a pad light. Solution will be to not listen to detections of such class until post-staging.

https://twitter.com/nextspaceflight/status/1618547932780990465

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Since a rocket that is a tiny dot in the sky looks the same as star or a bright light, there are inevitably a lot of false positives in this specific scenario. Right now I'm going to mitigate it by being smarter about considering whether the detection is likely to be valid.
« Last Edit: 01/26/2023 08:55 am by FutureSpaceTourist »

Online Steven Pietrobon

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End of webcast. Upcoming event.

00:18:49 Starlink satellites deploy
« Last Edit: 01/26/2023 08:51 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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T+18 minutes and 49 seconds. Satellites should be separating about now.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online FutureSpaceTourist

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https://twitter.com/_mgde_/status/1618547082620723200

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G’morning, Falcon 9 🥱

*insert “old man yells at cloud” meme here*

Guess I’ll have to wait a little longer to try this comp out. Next batch of Gen 2 Starlink constellation satellites are on their way!

Online FutureSpaceTourist

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https://twitter.com/planetdeimos/status/1618547403845701633

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.@SpaceX Starlink 5-2 mission headed to space at 4:32AM EST this morning with another batch of internet satellites. Still water and a low cloud ceiling briefly refracted light; turning the pre-dawn into day.
#SpaceX #Starlink

Online FutureSpaceTourist

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https://twitter.com/teslarati/status/1618549426858987522

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The Falcon 9 launches through the clouds on the way to deliver 56 Starlink satellites to orbit. This Falcon 9 (B1067) has now completed 9 launches and landings.

📸: @RDAnglePhoto

Offline Elthiryel

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One more post about the payload mass.

So during the webcast they said that the payload mass is "over 17,400 kg", but also "around 38,000 lb". The logical upper bound seems to be 38,500 lb (otherwise it would be "around 39,000 lb"), which gives us around 17,463 kg.

I have also found the previous launches for which the payload mass was announced directly by SpaceX:
Starlink Group 4-12 (2022-03-19), 53 satellites, ~16,250 kg, ~306.6 kg per sat
Starlink Group 4-23 (2022-08-28), 54 satellites, ~16.700 kg, ~309.3 kg per sat
Starlink Group 5-2 (2023-01-26), 56 satellites, 17,400-17,463 kg, 310.7-311.8 kg per sat
GO for launch, GO for age of reflight

Online FutureSpaceTourist

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https://twitter.com/spacex/status/1618555579722780673

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Deployment of 56 Starlink satellites confirmed
« Last Edit: 01/26/2023 09:25 am by FutureSpaceTourist »

Offline Herb Schaltegger

Thanks for the great coverage, Steven. Always a pleasure to wake up here on the other side of the world and scroll through your great selection of screen caps made while those of us over here were mostly sleeping. 👍
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